Portable laptop computer



FIG. 1 is a front, top and right side perspective view of a portable laptop computer showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a front, top and right side perspective view thereof with a combined cover and display panel thereof pivoted to a closed position overlying the keyboard thereof. 

The ornamental design for a portable laptop computer, as shown and described. 